purpose
A liquid level transmitter is a field transmitter that is directly installed on a pipeline or container. Due to the direct contact between the isolation membrane and the liquid phase medium, there is no need to use a pressure tube to lead out the positive pressure side. Therefore, it can measure the liquid level, pressure, and density of media such as high temperature, high viscosity, easy crystallization, easy precipitation, and strong corrosion, and then convert them into 4-20mA.DC signal output.
There are two types of liquid level transmitters: LT type flange type liquid level transmitter and ST type sanitary type liquid level transmitter. They can be combined with an intelligent amplification plate to form an intelligent liquid level transmitter. With manual operation in accordance with the HART protocol, they can communicate with each other for setting and monitoring.
The LT type liquid level transmitter is installed and connected using standard flanges; The ST type sanitary liquid level transmitter adopts a clamp form for quick connection. The surface in contact with the medium is finely processed and treated, and the smoothness and cleanliness meet hygiene standards. The internal filling liquid is selected and injected based on the standard of non polluting medium, so it can be widely used in industrial sectors such as food, beverage, and medicine.

Technical parameters and performance

type	Installation method	Range (KPa)		accuracy	Static pressure and overload pressure (MPa)	Static pressure influence (%)	Temperature effect (%/28 ℃)		annotations
		code	adjustment range				ambient temperature	medium temperature
LT	Flange connection	3 4 5 6	1.3～7.5 6.2～37.4 31.1～186.8 117～689.5	0.25	2 5 10 The specific working static pressure depends on the form and specifications of the flange.	± 0.25 (range doubled by 3)	± 0.25 (range 3 plus 0.5 times)	± 0.25 (range 3 plus 0.5 times)	1. The effects of static pressure and temperature are measured at the maximum range. Range 3 must be equipped with a 4 "or DN100 flange. 3. The liquid level transmitter is equipped with a negative pressure side and can be connected to a capillary tube with a length of 15 feet (4.5 meters). The installation form is the same as that of a remote transmission device. 4. Medium temperature -30~200 ℃.
ST	Clamp connection	4 5 6	6.2～ 37.4 31.1～186.8 117～689.5		25	±0.25	±0.25	±0.15